Swansea

Population: 14,603
Median household income: $84,367
Median home value: $211,700

Swansea is a community in St. Clair County, Illinois, home to 14,603 residents. At $84,367, its median household income sits above St. Clair County's $70,178.

Between 2019 and 2023, Swansea's population grew 5.4% from 13,851 to 14,603, while its median home value rose 26.8% from $167,000 to $211,700.

White (non-Hispanic) residents are the largest group, 71.8% of the population. 78.7% of workers drive to work alone.

Demographics

ACS 2019–2023

Population: 14,603
Median age: 38.4 yrs
Median household income: $84,367
Median home value: $211,700
Median gross rent: $1,178
Housing units: 5,929
Homeownership rate: 75.3%
Bachelor's degree or higher: 43.1%
Unemployment rate: 4.8%

Trends

ACS 5-year · 2019–2023

Population

13,85114,603

Median household income

$77,517$84,367

Median home value

$167,000$211,700

Median gross rent

$1,062$1,178

Year	Population	Median household income	Median home value	Median gross rent
2019	13,851	$77,517	$167,000	$1,062
2020	14,100	$81,625	$167,200	$1,057
2021	15,037	$80,331	$170,200	$1,070
2022	14,888	$85,603	$205,500	$1,208
2023	14,603	$84,367	$211,700	$1,178

Each year is a US Census Bureau ACS 5-year estimate ending that year.

Age distribution

Under 55.9%

5 to 1717.2%

18 to 249.5%

25 to 3413.9%

35 to 4411.7%

45 to 5410.3%

55 to 6413.6%

65 to 7410.5%

75 and over7.4%

	Count	Share
Under 5	868	5.9%
5 to 17	2,508	17.2%
18 to 24	1,385	9.5%
25 to 34	2,028	13.9%
35 to 44	1,709	11.7%
45 to 54	1,507	10.3%
55 to 64	1,993	13.6%
65 to 74	1,527	10.5%
75 and over	1,078	7.4%

Race & ethnicity

	Count	Share
White (non-Hispanic)	10,492	71.8%
Black or African American	2,579	17.7%
American Indian & Alaska Native	0	0.0%
Asian	346	2.4%
Native Hawaiian & Pacific Islander	0	0.0%
Some other race	0	0.0%
Two or more races	1,030	7.1%
Hispanic or Latino (any race)	156	1.1%

Educational attainment (age 25+)

No high school diploma3.4%

High school graduate21.3%

Some college or associate's32.2%

Bachelor's degree23.7%

Graduate or professional degree19.3%

	Count	Share
No high school diploma	337	3.4%
High school graduate	2,093	21.3%
Some college or associate's	3,173	32.2%
Bachelor's degree	2,336	23.7%
Graduate or professional degree	1,903	19.3%

Commute to work

Mean travel time to work: 26 min

Drove alone78.7%

Carpooled6.9%

Public transit0.8%

Walked0.2%

Bicycle0.0%

Worked from home12.8%

Other means0.6%

How workers get to work

	Count	Share
Drove alone	5,610	78.7%
Carpooled	492	6.9%
Public transit	59	0.8%
Walked	17	0.2%
Bicycle	0	0.0%
Worked from home	910	12.8%
Other means	44	0.6%

Travel time

	Count	Share
Under 15 min	2,114	34.0%
15 to 29 min	2,133	34.3%
30 to 44 min	1,145	18.4%
45 to 59 min	537	8.6%
60+ min	293	4.7%

Households

Average household size: 2.58
Poverty rate: 8.3% (1,202 of 14,416)

	Count	Share
Family households	3,599	64.4%
Nonfamily households	1,988	35.6%

Housing

Median year structure built: 1993

Occupancy

	Count	Share
Occupied	5,587	94.2%
Vacant	342	5.8%

Tenure (of occupied units)

	Count	Share
Owner-occupied	4,206	75.3%
Renter-occupied	1,381	24.7%

1-unit, detached70.9%

1-unit, attached3.7%

2 to 4 units4.6%

5 to 19 units6.1%

20 or more units5.9%

Mobile home & other8.8%

Units in structure

	Count	Share
1-unit, detached	4,205	70.9%
1-unit, attached	221	3.7%
2 to 4 units	272	4.6%
5 to 19 units	362	6.1%
20 or more units	349	5.9%
Mobile home & other	520	8.8%

Geography

Place GEOID: 1774119
Type (LSAD): 47
Land area: 6.48 sq mi
Water area: 0.14 sq mi
Center point: 38.5518, -89.9875